ngLATIoN
Special Assignment #2
ECE 350: Electric Power and Machines
Consider the power system below: 2514\‘fJ 1.1552. 1123’: 2 = It 1151*? 77"5 2‘
4 .n.
X2 1 t: ' 30. 5 “'15
a 3
E ~ 1 +' .7‘tl
y_Y 29“ (DHZS 33
L4 ~—
X3 YE: : la'wY
at
Gi
X1
L
ECE 350 Electric Power and Machines
Spring 2017
HOMEWORK ASSIGNMENT #1
1/19/2017
Due Date: 1/31/2017 @beginning of the class
1. A single-phase transmission line feeds a load from a substation. The substation voltage is measured to be
Vs = 12.470 kV. The s
ECE 350 Electric Power and Machines
Spring 2017
HOMEWORK ASSIGNMENT #2
2/7/2017
Due Date: 2/14/2017 @beginning of the class
1. A three-phase balanced system has the below one-line diagram. A three-phase generator supplies power
to three-phase loads throug
ECE 350 Electric Power and Machines
Spring 2017
HOMEWORK ASSIGNMENT #3
March 7, 2017
Due Date: 3/9/2017 @beginning of the class
1. A single-phase, 300 kVA, 11 kV/2.2 kV, 60 Hz transformer has the following equivalent circuit parameters
referred to the hig
SAMPLE TEST PROBLEMS #1
ECE 350: Electromechanics
[1]
The load below draws a real power of 100 W from the source, and the
magnitude of the current is 10 A. The magnitude of the source voltage is 250 V,
Assuming 60 Hz operation, calculate the value of the
gd LULUID N
Special Assignment #2
ECE 350: Electric Power and Machines
Considerthe power system below: cfw_QB Bus VL ,lI-V inks
~JESL_i_
U3
5 Zll 6.7.2.
L5 l37-o25
us 132.25
13.8 \ao
l3"? aqo \I 7-
- besc
2. - -
L1 G4 base 5
\3-9
1
(53 N be; us 3
ECE 350: Electric Power & Machines
Spring 2016
HOMEWORK ASSIGNMENT #3
An 8-pole, 60 Hz, 50 MVA, 13.8 kV synchronous generator has the test data provided
below. The generator supplies a -connected impedance load with = 15 + 6 while
operating with rated ter
F6W*
ECE 350: Electric Power & Machines
Spring 2016
HOMEWORK ASSIGNMENT #3
An 8-pole, 60 Hz, 50 MVA, 13.8 kV synchronous generator has the test data provided
below. The generator supplies a A-connected impedance load with ZA 2 15 +16 9 while
operating
SO Dbl/TEEN
SPECIAL ASSIGNMENT #1
ECE 350: Electric Power & Machines
A single-line diagram for a power system is provided below. Each transmission line has a
series impedance of 8+j40 Q. Load 3 is a balanced load of 150 MVA at 0.80 pf lagging and
oper
Homework Assignment #4
ECE 350: Electric Power & Machines
Spring 2016
An 8-pole, 60 Hz, 20,000 HP, 13.8 kV synchronous motor has the test data provided below. The
motor has rotational losses of 250 HP and is operated at rated terminal voltage. The load on
ECE 350 Electric Power and Machines
Spring 2017
HOMEWORK ASSIGNMENT #4
March 29, 2017
Due Date: 4/4/2017 @beginning of the class
1. A three-phase, 2300 V, 60 Hz, Y-connected, four-pole, non-salient rotor synchronous generator has a
synchronous reactance o
ECE 350 Electric Power and Machines
Spring 2017
HOMEWORK ASSIGNMENT #5
April 13, 2017
Due Date: 4/20/2017 @beginning of the class
1. A 208 V, 45-hp, 0.8 pf leading, connected, 60 Hz synchrounous machine has an Xs =2.5 and RA = 0.
PF &W =1.5 kW and Pcore =
gﬂLl/LTEOH
SPECIAL ASSIGNMENT #1
ECE 350: Electric Power 8: Machines
A single-line diagram and schematic for a power system are provided below. Two
balanced parallel loads are fed by two transmission lines from separate sources as
illustrated. Load 2a
SAMPLE TEST PROBLEMS #1
ECE 350: Electromechanics
[1]
The load below draws a real power of 100 W from the source, and the
magnitude of the current is 10 A. The magnitude of the source voltage is 250 V,
Assuming 60 Hz operation, calculate the value of the
SpecialAssignment#3
ECE350:ElectricPowerandMachines
Spring2012
A threephase, 60 Hz, 2250 HP, 1786 RPM, 4 pole, 2300 V induction motor has the following
equivalentcircuitparameters:
0.029
0.226
0.022
13.04
1) Determinethespeedatwhichmaximumtorqueisdeve
PRACTICEPROBLEMSFOREXAMINATION#2
(thisislongerthananactualexamination)
ECE350:ElectricPowerandMachines
Spring2012
[1]
Threesinglephasetransformersareeachratedat500kVA,60Hz,7200V/480V.They
are connected on the lowvoltage side and Y on the highvoltage side.
EXAMINATION #1
ECE 350: Electric Power and Machines
Summer 2011
Name:
> This exam is open book and notes.
> You must show your work to receive full credit.
> Be sure to include units on your answers as appropriate.
> No materials or calculators may be sh
EXAMINATION #2
ECE 350: Electric Power and Machines
Summer 2011
Name: [
> This exam is open book and notes.
> You must show your work to receive full credit.
> Be sure to include units on your answers as appropriate.
> No materials or calculators may be s
Sci EN
0 SPECIAL ASSIGNMENT #1
ECE 350: Electric Power & Machines
Two balanced parallel loads are fed by two transmission lines from separate sources as
illustrated below. Each transmission line has a series impedance of 10+i50 9. Load 1 is
a balanc
SAMPLE TEST PROBLEMS #1
ECE 350: Electromechanics
Summer 2011
[1]
The load below draws a real power of 100 W from the source, and the
magnitude of the current is 10 A. The magnitude of the source voltage is 250 V,
Assuming 60 Hz operation, calculate the v
SPECIAL ASSIGNMENT #1
ECE 350: Electric Power & Machines
A single-line diagram for a power system is provided below. Each transmission line has a
series impedance of 8+j40 . Load 3 is a balanced load of 150 MVA at 0.80 pf lagging and
operates at 228 kV. L
Homework Assignment #5
ECE 350: Electric Power & Machines
Spring 2016
The National Electrical Manufacturers Associations (NEMA) classifies induction motors by their
speed/torque/slip relationships and starting current. Describe these classifications and p
SOLUTION
ECE 455/555: Mechanics of Engineering Systems
Fall 2010
HOMEWORK #1
1. A uniform beam of mass M and length r has weights W1 and W2 at two positions, as
W
illustrated below. Find the position x such that the normal force at O will be 1 .
2
r /4
d
ECE 383 - Microcomputers Fall 2009 Homework 4 Solutions
[1] Given the following codes, what will the resulting values be at the break points for the memories and registers? (All the breakpoints are independent with each other) #include ECE383_Dragon12plus
ECE 383 - Microcomputers
Fall 2009 Quiz 5 Solutions
Instructions:
1. Please write your name and student number in the upper right hand corner of the back of this sheet.
2. When you are finished answering the questions, fold the paper in half lengthwise wi
ECE 383 - Microcomputers Fall 2009 Quiz 4 Solutions
Instructions: 1. Please write your name and student number in the upper right hand corner of the back of this sheet. 2. When you are finished answering the questions, fold the paper in half lengthwise wi